Question

25X4Y DIVIZIBIL CU 5; 3;​

Answer 1

$25x4y \: \vdots \: 5 \\ \implies x\in\{1,2,3,4,5,6,7,8,9\} \\ \implies y\in\{0,5\} \\ \\ \\ \\ \\ 25x4y \: \vdots \:3 \\ ( 2 + 5 + x +4 + y) \: \vdots \: 3 \\ (11 + x + y )\: \vdots \: 3\\ \implies 25x4y\in\{25041,25044,25047,2514 ,\\ 25140,25143,25146,25149, \\ 25242,25245,25248, \\ 25341,25344,25347,\\ 25440,25443,25446,25449, \\ 25542,25545,25548, \\ 25641,25644,25647,\\ 25740,25743,25746,25649,\\ 25842,25845,25848, \\ 25941,25944,25947\}$